"The engines involved are the V6 TDI Gen2 evo EU6 engine with a maximum output of 200kw which is used in the A6 and A7 models of generation C7, which are now being phased out".
Audi announced the release of a new motor software upgrade on Wednesday in response to revelations of previously-unknown emissions-cheating devices identified in diesel vehicles of the luxury auto maker's A6 and A7 series. Customers who had already ordered the models were notified.
In a statement, Audi said it discovered irregularities during "internal investigations of the diesel issue", adding that it immediately reported the discovery to the Kraftfahrt-Bundesamt (KBA), Germany's Federal Motor Transport Authority, as well as the Luxembourg vehicle registration authority.
Audi chairman Rupert Stadler said the company has responded rapidly to the latest allegations "because full disclosure lies in our highest interest".
Volkswagen AG's Audi unit suspended deliveries of some of its popular sedans and coupes after informing German authorities of irregularities in emissions systems, embroiling the luxury brand further in the carmaker's diesel scandal. "We did so without delay also in this case". A total of 60,000 vehicles around the world are understood to have the affected engines fitted.
"The KBA has opened an official hearing on the suspicion of an inadmissible defeat device for Audi V6 TDI vehicles of the A6 / A7 models", a spokesperson from the KBA told the German publication.
Audi said it didn't know about this new software issue and has voluntarily contacted authorities. Audi, which didn't elaborate on the nature of the irregularities, said it would provide a software update in coordination with authorities.